Home / 84,823.20-126,975.60-66,160.80

Finding the Fourth Proportional to 84,823.20, 126,975.60 and 66,160.80

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Solution

The fourth proportional to 84,823.20, 126,975.60 and 66,160.80 is: 99,039.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,823.20 : 126,975.60 = 66,160.80 : x
  2. Step 2: Convert to fraction form
    84,823.20/126,975.60 = 66,160.80/x
  3. Step 3: Cross multiply
    84,823.20x = 126,975.60 × 66,160.80
  4. Step 4: Simplify right side
    84,823.20x = 8,400,807,276.48
  5. Step 5: Solve for x
    x = 8,400,807,276.48/84,823.20
  6. Step 6: Final answer
    x = 99,039.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.